Automatic damper control.



A. A. L ANDON.

- AUTOMATIC DAMPER CONTROL.

APPLICATION FILED'NOV. 29. 19L)- AMA Feb. 12, 1918.

WITNESSES inseam.

ARCHER A. LANDON, OF BUFFALO, NEW YORK, ASSIGNOB T0 AMERICAN RADIATPR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

AUTOMATIC DAMPER conrnon Specification of Eetters Patent.

Patented Feb. 1%, .Wlld.

Application filedv November 29, 1915. Serial No. 64,061.

To all whom it may concern:

Be it known that I, ARCHER A. LAnnoN, a citizen or" the United States, residing at Bufi'alo, Erie county, in the State of New York, have invented certain new and useful Improvements in Automatic Damper Controls, of which the following is a full, clear, and exact specification.

My invention relates to improvements in heating apparatus, and the same has for its object more particularly to prov1de a rehable and efiicient device for regulatlng the rate of consumption in a boiler.

One of the objects of the invention 1s to provide a damper which is movable bodily from the air inlet opening with which it coacts so that the entire area of the opening will be effective for the admission of air upon the slightest movement of the damper.

Another object is to so mount the damper that when in its open position it w1ll Oder a minimum obstruction to the flow of gases from the boiler to the smoke pipe.

A further object is to so arrange and connect the upper and lower dampersofa holler relatively to the flow of the inflowmg currents of air that they will at all times be m a state of stable equilibrium whereby fluctu-- ation or fluttering of the dampers is avoided.

Other objects of the invention will be referred to in the specification, and pointed out in the claims. p To the attainment of the aforesaid ob ects and ends my invention consists in the novel details of construction, and in the combination, connection and arrangement of parts hereinafter more fully described and then pointed out in the claims.

In the accompanying drawings showing an illustrative embodiment of the invention- Figure 1 is a view in side elevation of a heating boiler equipped with the improved regulator.

Fig. 2 is a plan or top view thereof, and V Fig. 3 is a sectional view of the smoke hood on the line 3--3 of Fig. 2.

Referring to the drawings, 4 represents a heating boiler of any suitable type comprising a base 5 and a smoke hood 6 having an outlet 7 to which the smoke pipe is connected in the usual manner. The base 5 is provided with an air inlet opening 8, the flow riations of temperature or pressure by any suitable mechanism. As shown the lever 11 is actuated by the expansible and collapsible vessel 13 of a thermosensitive controlling device actuated by the boiler. As the temperature increases the vessel 13 expands thuscausing the lever 11 to rock about its pivot in a direction such that the end thereof to which the rod 10 is attached will be lowered thereby permittting the cover 9 to close, whereas if the temperature decreases,- the vessel 13 will contract, and the lever will be rocked in the opposite direction to open the cover 9.

The smoke hood 6 is provided with an air inlet opening 14 within which is secured a frame 15 having inwardly extending flanges which form a seat 16 for a damper 17 when in its closed position. The damper 17 is carried by one end of a curved arm 18 which passes through the opening 14:, and has its other end secured to a rock shaft 19 rotatably supported uponthe smoke hood and provided with a laterally extending. arm 20 which is connected to the lever 11 by a link 21.

As the rock shaft 19 is rotated to move the damper 17 from its closed to its open position the damper will be moved bodily from its seat 16 thus eflecting a rapid opening of the air inlet 14. Furthermore, by reason of this bodily movement of the damper from its seat, the air inlet 14 will be opened throughout its entire area thus permittting a greater and more widely distributed flow of air through the inlet than is obtained with the usual typeof damper which is pivotally mounted, but not bodily movable. Another advantage which arises from so mounting the damper that it may be moved bodily from its seat is that when it is opened it will lie substantially parallel to the direction of the flow of gases from the boiler to the smoke pipe, whereby the edge is presented to the flow of the gases thereby odering practically no obstruction to the passage of the gases.

- tend to obstruct the free flow of such. gases.

This advantage isincreased by inclinin the portion 22 of the smoke hood 6 in whic the inlet opening 14 is formed so that the plane of the damper seat 16 will be at an angle with the axis of the smoke outlet 7. The inclined position of the inlet 14: will also serve to cause the inflowing current of air to enter in a direction parallel to the flow 'of the gases from the boiler to the smoke pipe thereby avoiding any cross currents which The parts are so adjusted and arranged that, when the lever 11 is moved to close the cover 9, the damper 17 will be opened, and vice versa. As the damper 17 opens in the direction of the flow of the air through the opening 14; and the damper 9 opens in a direction opposite to that of the current of air flowing in at the opening 8 in the base of the boiler, there will be at all times a balancing of the dampers, which will prevent any fluc tuation or'fiuttering thereof, as a result of which'an exact and even regulation of the draft through the boiler is obtained.

Having thus described my said invention, what I claim and desire to secure by Letters Patent is 1. The combination with a boiler having a smoke hood provided with an air inlet and 2. The comb'natlon with a boiler having a smoke hood provided with an air inlet and a smoke outlet, the plane ofthe air inlet being at an angle with respect to the axis of the smoke outlet and diverging from said axis in the direction of said smoke outlet to cause the inflowing air to enter the inlet in the direction of the flow of gases through the smoke outlet, of a damper within said snioke hood mounted to open in the direction of the inflowing air to control the flow of air through the inlet, said damper in its position being substantially parallel to open the dlrection of the flow of gases from the boiler, and means'for opening and closing the damper, substantially as specified.

3. The combination with a boiler provided with a flue for conducting the gases therefrom, said flue having an air inlet, the plane of the air inlet being at an angle with respect to the axis of the flue to cause the inflowing air to enter said inlet in the direction of the flowtof gases through said flue, of a damper ositioned within said fine and movable bodi y toward and away from said inlet to close and open the same whereby to control the flow of air therethrough, said damper in its open position bein substantially parallel to the direction of tilie flow of gases from the boiler, and means for opening and closing said damper, substantially as specified. f

4. The combination with a boiler having a smoke hood provided with an air inlet and a smoke outlet, the plane of the air inlet being at an angle with respect to the axis of the smoke outlet to cause the inflowing air to enter the inlet in the direction of the flow of gases through thesmoke outlet, of a damper positioned within the smoke hood and movable bodily toward and away from the air inlet to close and open the same whereby to control the flow of air therethrough, said damper in its open position being substantially parallel to the direction of the flow of gases from the boiler, and means for opening and closing the damper, substantially as specified.

5. The combination with a boiler having a.

smoke hood provided with an air inlet and a smoke outlet, the plane of the air inlet bein at an angle w1th respect to the axis of t e smoke outlet to cause theinfiowing air to enter the inlet in the direction of the flow of gases through the smoke outlet, of a damper positioned within the smoke hood and movable bodily toward and away from the air inlet to close and open the same whereby to control the flow of air therethrough, said damper in its open position being substantially parallel to the direction.

of the flow of gases from the boiler, an arm having one end pivotally mounted upon the smoke hood'adjacent the air inlet and its other end secured to the damper, and means to actuate the arm to open and close the damper, substantially as specified.

Signed at the city of Buffalo, Erie county, in the October, one thousand nine hundred and fifteen.

ARCHER A. LANDON. Witnesses:

I Comm) A. Dm'rnnicn,

LAURA E. WEBB.

State of New York, this 28th day of 

